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Plasma physics

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  1. Sep 30, 2013 #1
    Hello everybody.

    I have a question about generation of return current in plasma beam interaction process:

    we enter an electron beam in a plasma medium, and this electron beam generate a return current in plasma, I want to know how electron current can produce a return current in plasma?
    thanks
     
  2. jcsd
  3. Sep 30, 2013 #2

    mfb

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    Staff: Mentor

    If you shoot enough electrons, the source gets positively charged and your target gets a negative charge. A potential difference in a conducting medium leads to a current flow.
    I don't think this is particle physics.
     
  4. Sep 30, 2013 #3
    But it is plasma physics.
     
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